Rotary engine



(No Model.) O. H. ROBINSON.

ROTARY ENGINE. No. 281,796. Patented July 24, 1883.

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Fi f 5. 1 1944.

WITNESSES: I 7 E a .9 INVENTOR; 0%01KW5 ZM/M'O/w BY ATTO NEYS UNITEDSTATES PATENT OFFICE.

O RTON H. ROBINSON, OF MANISTEE, MICHIGAN.

ROTARY ENGINE.

SPECIFICATION formingpart of Letters Patent No. 281,796, dated July 24,1883.

Application filed December 20. 1882. (No model.) A

1'0 all whom, it may concern Be it known that I, ORTON H. ROBINSON, ofManistee, in the county of Manistee and State of Michigan, have inventeda new and useful Improvement in Rotary Engines, of which the followingis a full, clear, and exact description.

In my improved rotary engine I employ a wheel or case having internalsteamways eccentric to its shaft, and provide the shafts witharadially-moving valve which serves as agate or piston against which thesteam acts, as hereinafter described and claimed.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is an end view of my improved rotary engine. Fig. 2 is a sideview. Fig. 3 is a section on line as m, Fig. 2. Fig. 4 is a section online y 1 Fig. 1; and Fig. 5 is a perspective of the sliding valve.

A is the wheel or case of the engine, which is externally of cylindricalform, and may be made in two or more portions compressed together.

B is the shaft extending through the case, and G is the sliding gate orvalve fitted in a transverse mortise, a, in the shaft B. The wheel orcase A is cored out internally to form two steam-chambers, b 1), thesechambers being of irregular or eccentric form. At points- 1 1, onopposite sides of the shaft, are abutments extending from the surface ofthe shaft outward to the extreme depth of the steamchambers. From thatpoint for a short distance the chambers are formed concentric to theshaft, then drawn inward toward the shaft to about the point 2, and fromthence extend to the surface of the shaft at the opposite abutment by agradual and easy curve. The shaft is formed with a longitudinalstcampassage, d, and also with a similar exhaustpassage, 6. Thesteam-passage 62, when the valve 0 is moved inward, connects throughparts d with a passage, f, leading to the bottom of mortise, so as toadmit steam for forcing the valve outward. The passage d also connectswith a port, 9, through the valve, and transverse passage 9 in theshaft, when volves around the casing, which is provided with suitableflanges for keeping the wheel in place. Steam entering by thepassagedpasses behindthe valve 0 by the passage f and forces the valveoutward into the steam-chamber in the position as shown in Fig. 3. Thisoutward position of the valve allows steam to go by passage 9 g to thespace between the abutment and the valve, and the wheel is thus forcedaround. When the surface at 2 reaches the valve, the valve is forcedinward, and steam being thus cut off works expansively from the pointuntil the valve reaches the inner end of the opposite abutment, by whichtime the valve has been moved to its extreme inward position, and assoon as the valve passes the point of the abutment it is again forcedoutward in the other steam-chamber. Steam now entering again between thevalve and the abutment, the rotation of the wheel continues and thesteam in the chamber as used exhausts through the passage 6. There maybe a groove on the surface of the shaft connecting the exhaust-ports, soas to continue the exhaust as long as possible.

Havingthus fully described my invention, I

claim as new and desire to secure by Letters Patent 1. In'rotaryengines, the combination, with the shaft B, of the wheel or case A,formed with steam chambers, substantially as described, and the gate orvalve 0, with the steam ports and passages arranged within the saidshaft, as shown and described.

2. The combination, with the shaft B, having the transverse mortise aand steam-passages (Z d and f, of the apertured valve 0 and wheel A,having steam-chambers b, substantially as described.

OBTON H. ROBINSON.

WVitnesses:

GEO. F. COLEMAN, DELBERT E. ROBINSON.

